Oliver County Climate
Oliver County, North Dakota
Avg Annual Temp
42.6°F
Annual Precip
18.9"
Annual Snowfall
—
Extreme Heat Days
16.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Oliver County Weather
Cold High-Latitude Continental Climate
Oliver County averages 42.6°F annually, falling far below the national median temperature. This climate is defined by its position in the northern plains of the U.S.
Warmer than the Average North Dakotan
Oliver is warmer than the 41.0°F state average. Its 18.9 inches of annual precipitation is slightly lower than the 19.5-inch state benchmark.
Moderate Precipitation for the Region
At 18.9 inches of precipitation, Oliver is wetter than Mercer (17.3 inches) but drier than Nelson (20.2 inches). Its 17 extreme heat days are standard for the central part of the state.
Distinct Seasons and Moderate Heat
The county experiences a July average of 69.7°F with 17 extreme heat days. Winters are cold with a 13.7°F January average, though official snowfall data is currently limited.
Home Sealing and HVAC Maintenance
Focus on sealing windows and doors to stay warm during the 16.5°F average winter months. Prepare for nearly three weeks of 90°F heat during the summer season.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.